Annotation of parser3/src/main/pa_common.C, revision 1.34
1.26 paf 1:
1.15 paf 2: /** @file
1.16 paf 3: Parser: commonly functions.
4:
1.8 paf 5: Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)
1.16 paf 6:
1.8 paf 7: Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)
1.5 paf 8:
1.34 ! paf 9: $Id: pa_common.C,v 1.33 2001/03/27 18:24:38 paf Exp $
1.1 paf 10: */
11:
1.22 paf 12: #include "pa_config_includes.h"
1.1 paf 13:
1.2 paf 14: #include <fcntl.h>
15: #include <sys/stat.h>
16: #include <io.h>
1.1 paf 17: #include <stdio.h>
1.20 paf 18: #include <errno.h>
19:
1.1 paf 20: #include "pa_common.h"
1.2 paf 21: #include "pa_types.h"
1.4 paf 22: #include "pa_exception.h"
1.14 paf 23: #include "pa_pool.h"
24: #include "pa_globals.h"
25: #include "pa_value.h"
26: #include "pa_hash.h"
27: #include "pa_string.h"
1.1 paf 28:
1.22 paf 29: #if _MSC_VER
1.1 paf 30:
31: int __vsnprintf(char *b, size_t s, const char *f, va_list l) {
32: int r=_vsnprintf(b, --s, f, l);
33: b[s]=0;
34: return r;
35: }
36: int __snprintf(char *b, size_t s, const char *f, ...) {
37: va_list l;
38: va_start(l, f);
39: int r=__vsnprintf(b, s, f, l);
40: va_end(l);
41: return r;
42: }
43:
44: #endif
1.2 paf 45:
1.18 paf 46:
1.28 paf 47: char *file_read_text(Pool& pool, const String& file_spec, bool fail_on_read_problem) {
1.34 ! paf 48: void *result;
! 49: size_t size;
! 50: return
! 51: file_read(pool, file_spec, result, size, fail_on_read_problem)?(char *)result:0;
! 52: }
! 53: bool file_read(Pool& pool, const String& file_spec,
! 54: void*& data, size_t& size, bool as_text,
! 55: bool fail_on_read_problem) {
1.33 paf 56: char *fname=file_spec.cstr();
57: int f;
1.2 paf 58: struct stat finfo;
1.33 paf 59:
60: // first open, next stat:
61: // directory update of NTFS symbolic links performed on open.
62: // ex:
63: // a.html:^test[] and b.html hardlink to a.html
64: // user inserts ! before ^test in a.html
65: // directory entry of b.html in NTFS not updated at once,
66: // they delay update till open, so we must not do stat before that
1.34 ! paf 67: if(
! 68: (f=open(fname, O_RDONLY|(as_text?_O_TEXT:_O_BINARY)))>=0 &&
! 69: stat(fname, &finfo)==0) {
1.2 paf 70: /*if(exclusive)
71: flock(f, LOCK_EX);*/
1.34 ! paf 72: data=pool.malloc(finfo.st_size+(as_text?1:0));
! 73: size=read(f, data, finfo.st_size);
1.2 paf 74: /*if(exclusive)
75: flock(f, LOCK_UN);*/
76: close(f);
1.32 paf 77:
1.34 ! paf 78: if(size>=0 && size<=(size_t)finfo.st_size) {
! 79: if(as_text)
! 80: ((char *)data)[size]=0;
! 81: } else
1.33 paf 82: PTHROW(0, 0,
83: &file_spec,
84: "read failed: actually read %d bytes count not in [0..%ul] valid range",
1.34 ! paf 85: size, (unsigned long)finfo.st_size);
1.32 paf 86:
1.34 ! paf 87: return true;//prepare_config(result, remove_empty_lines);
1.2 paf 88: }
1.4 paf 89: if(fail_on_read_problem)
1.33 paf 90: PTHROW(0, 0,
91: &file_spec,
1.29 paf 92: "read failed: %s (#%d)", strerror(errno), errno);
1.34 ! paf 93: return false;
1.8 paf 94: }
95:
1.18 paf 96: void file_write(Pool& pool,
1.28 paf 97: const String& file_spec,
1.34 ! paf 98: const void *data, size_t size,
1.33 paf 99: bool as_text/*,
1.20 paf 100: bool exclusive*/) {
1.28 paf 101: char *fname=file_spec.cstr();
102: int f;
103: if(access(fname, F_OK)!=0) {/*no*/
1.33 paf 104: if((f=open(fname, O_WRONLY|O_CREAT|_O_BINARY, 0666))>0)
1.28 paf 105: close(f);
106: }
107: if(access(fname, R_OK|W_OK)==0) {
1.34 ! paf 108: int mode=O_RDWR|(as_text?_O_TEXT:_O_BINARY)
1.18 paf 109: #ifdef WIN32
1.28 paf 110: |O_TRUNC
1.18 paf 111: #endif
1.28 paf 112: ;
1.33 paf 113: if((f=open(fname, mode, 0666))>=0) {
1.28 paf 114: /*if(exclusive)
115: flock(f, LOCK_EX);*/
116:
1.33 paf 117: if(size) write(f, data, size);
1.18 paf 118: #ifndef WIN32
1.33 paf 119: ftruncate(f, size);
1.18 paf 120: #endif
1.28 paf 121: /*if(exclusive)
122: flock(f, LOCK_UN);*/
123: close(f);
124: return;
1.18 paf 125: }
126: }
1.33 paf 127: PTHROW(0, 0,
128: &file_spec,
1.29 paf 129: "write failed: %s (#%d)", strerror(errno), errno);
1.30 paf 130: }
131:
132: void file_delete(Pool& pool, const String& file_spec) {
133: if(unlink(file_spec.cstr())!=0)
1.33 paf 134: PTHROW(0, 0,
135: &file_spec,
1.30 paf 136: "unlink failed: %s (#%d)", strerror(errno), errno);
1.31 paf 137: }
138:
139: bool file_readable(const String& file_spec) {
140: return access(file_spec.cstr(), R_OK)==0;
1.18 paf 141: }
142:
1.8 paf 143: char *getrow(char **row_ref, char delim) {
144: char *result=*row_ref;
145: if(result) {
146: *row_ref=strchr(result, delim);
147: if(*row_ref)
148: *((*row_ref)++)=0;
149: else if(!*result)
150: return 0;
151: }
152: return result;
153: }
154:
1.23 paf 155: char *lsplit(char *string, char delim) {
156: if(string) {
157: char *v=strchr(string, delim);
1.8 paf 158: if(v) {
159: *v=0;
160: return v+1;
161: }
162: }
163: return 0;
164: }
165:
166: char *lsplit(char **string_ref, char delim) {
167: char *result=*string_ref;
168: char *next=lsplit(*string_ref, delim);
169: *string_ref=next;
170: return result;
1.9 paf 171: }
172:
173: char *rsplit(char *string, char delim) {
1.18 paf 174: if(string) {
1.9 paf 175: char *v=strrchr(string, delim);
1.18 paf 176: if(v) {
1.9 paf 177: *v=0;
178: return v+1;
179: }
180: }
181: return NULL;
1.10 paf 182: }
183:
184: char *format(Pool& pool, double value, char *fmt) {
185: char *result=(char *)pool.malloc(MAX_NUMBER);
186: if(fmt)
187: if(strpbrk(fmt, "diouxX"))
188: if(strpbrk(fmt, "ouxX"))
1.33 paf 189: snprintf(result, MAX_NUMBER, fmt, (uint)value );
1.10 paf 190: else
1.33 paf 191: snprintf(result, MAX_NUMBER, fmt, (int)value );
1.10 paf 192: else
193: snprintf(result, MAX_NUMBER, fmt, value);
194: else
1.33 paf 195: snprintf(result, MAX_NUMBER, "%d", (int)value);
1.10 paf 196:
197: return result;
1.12 paf 198: }
199:
1.13 paf 200: size_t stdout_write(const char *buf, size_t size) {
1.12 paf 201: #ifdef WIN32
202: do{
203: int chunk_written=fwrite(buf, 1, min(8*0x400, size), stdout);
204: if(chunk_written<=0)
205: break;
206: size-=chunk_written;
207: buf+=chunk_written;
208: } while(size>0);
209:
210: return size;
211: #else
1.13 paf 212: return fwrite(buf, 1, size, stdout);
1.12 paf 213: #endif
1.2 paf 214: }
1.14 paf 215:
216: const char *unescape_chars(Pool& pool, const char *cp, int len) {
217: char *s=(char *)pool.malloc(len + 1);
218: enum EscapeState {
1.33 paf 219: EscapeRest,
220: EscapeFirst,
1.14 paf 221: EscapeSecond
222: } escapeState=EscapeRest;
223: int escapedValue=0;
224: int srcPos=0;
225: int dstPos=0;
226: while(srcPos < len) {
227: int ch=cp[srcPos];
228: switch(escapeState) {
229: case EscapeRest:
230: if(ch=='%') {
231: escapeState=EscapeFirst;
232: } else if(ch=='+') {
233: s[dstPos++]=' ';
234: } else {
235: s[dstPos++]=ch;
236: }
237: break;
238: case EscapeFirst:
239: escapedValue=hex_value[ch] << 4;
240: escapeState=EscapeSecond;
241: break;
242: case EscapeSecond:
243: escapedValue +=hex_value[ch];
244: s[dstPos++]=escapedValue;
245: escapeState=EscapeRest;
246: break;
247: }
248: srcPos++;
249: }
250: s[dstPos]=0;
251: return s;
252: }
253:
1.17 paf 254: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Val *avalue,
1.14 paf 255: void *info) {
256: if(akey==VALUE_NAME)
257: return;
258:
259: // ...; charset=windows1251
260: String *string=static_cast<String *>(info);
261: string->APPEND_CONST("; ");
1.20 paf 262: string->append(akey, String::UL_HEADER, true);
1.14 paf 263: string->APPEND_CONST("=");
264: string->append(static_cast<Value *>(avalue)->as_string(),
1.20 paf 265: String::UL_HEADER, true);
1.14 paf 266: }
1.20 paf 267: const String& attributed_meaning_to_string(Value& meaning) {
268: String &result=*new(meaning.pool()) String(meaning.pool());
269: if(Hash *hash=meaning.get_hash()) {
1.14 paf 270: // $value(value) $subattribute(subattribute value)
271: if(Value *value=static_cast<Value *>(hash->get(*value_name)))
1.20 paf 272: result.append(value->as_string(), String::UL_HEADER, true);
1.14 paf 273:
1.25 paf 274: hash->for_each(append_attribute_subattribute, &result);
1.14 paf 275: } else // result value
1.20 paf 276: result.append(meaning.as_string(), String::UL_HEADER, true);
1.14 paf 277:
278: return result;
1.24 paf 279: }
280:
281: #ifdef WIN32
282: void back_slashes_to_slashes(char *s) {
283: if(s)
284: for(; *s; s++)
285: if(*s=='\\')
286: *s='/';
287: }
288: #endif
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